Which type of foam can be injected into the base of a burning tank?

Fluoroprotein foam is specifically designed to combat flammable liquid fires, especially those involving hydrocarbon fuels. Its formulation includes proteins derived from natural sources, along with fluorinated surfactants that enhance the foam's ability to form a film on the surface of the burning liquid. This film acts as a barrier, preventing the fuel vapors from igniting and effectively suppressing the flames.

Fluoroprotein foam is particularly effective for fire extinguishment in situations where the foam needs to be injected or applied directly into the base of a burning tank. Its unique properties allow it to adhere to the liquid surface, providing both suppression and cooling effects.

While other types of foam, such as alcohol-resistant foam, are designed to tackle specific types of polar solvents, they do not possess the same versatile application for various hydrocarbons as fluoroprotein foam does. Aqueous film-forming foam is also effective for certain applications but is primarily intended for storage, transportation, and handling of flammable and combustible liquids rather than direct application into the fuel source in the case of a tank fire.